https://communities.sas.com/t5/SAS-IML-Software-and-Matrix/find-function-in-IML/m-p/76337#M461 Is there a find function in IML that will let me find indices of nonzero elements? For example I = Find(X[,1]=2) should return indices for all rows in matrix X where the first column value is equal to 2. <BR /> One option is to implement this function as a subroutine and call this from my program. But I have peformance concerns as I call this function several times in my code.<BR /> Any help will be appreciated. Wed, 21 Oct 2009 14:40:47 GMT model_coder 2009-10-21T14:40:47Z https://communities.sas.com/t5/SAS-IML-Software-and-Matrix/find-function-in-IML/m-p/76337#M461 Is there a find function in IML that will let me find indices of nonzero elements? For example I = Find(X[,1]=2) should return indices for all rows in matrix X where the first column value is equal to 2. <BR /> One option is to implement this function as a subroutine and call this from my program. But I have peformance concerns as I call this function several times in my code.<BR /> Any help will be appreciated. Wed, 21 Oct 2009 14:40:47 GMT https://communities.sas.com/t5/SAS-IML-Software-and-Matrix/find-function-in-IML/m-p/76337#M461 model_coder 2009-10-21T14:40:47Z https://communities.sas.com/t5/SAS-IML-Software-and-Matrix/find-function-in-IML/m-p/76338#M462 I found the loc function that does exactly what I want. Thanks. Wed, 21 Oct 2009 15:26:23 GMT https://communities.sas.com/t5/SAS-IML-Software-and-Matrix/find-function-in-IML/m-p/76338#M462 model_coder 2009-10-21T15:26:23Z